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Quality · Documentation

Certifications

ISO 9001:2015 · SGS · National High-Tech Enterprise · Tax Credit A.

Wolfer is certified under the international quality system buyers ask for first (ISO 9001:2015) and audited by independent third parties (SGS). National-level credentials — High-Tech Enterprise and Tax Credit A — provide further evidence of operational maturity.

Last updated Reviewed by Luo Genwen, Production Plant Manager

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We do not currently hold ISO 13485 (medical) or ISO 14644 (cleanroom). We ship as a component supplier to medical and semiconductor OEMs that hold those certs themselves, and we provide the documentation (material certificates, dimensional reports, surface-finish records) that those customers' quality systems require.

For any of the certifications above, we can email a copy of the certificate to qualified buyers under NDA.

Quality

Certifications & ratings

ISO 9001:2015

International quality management system, first certified in 2021. Surveillance-audited annually and recertified on the standard three-year cycle; the current certificate was issued in 2025. Copy available on request.

SGS — third-party audit pass

European OEMs often require an SGS audit before listing a Chinese supplier as approved.

National High-Tech Enterprise

Recognition by Guangdong Province for sustained R&D investment and technical capability.

Tax Credit Grade A

Highest tax-credit grade — issued by the Chinese tax authority based on compliance and stability.

Patents

Invention and utility-model patents, including the split (clamp-type) coupling design.

KTR authorized partner

Authorized dealer of KTR Germany transmission components since 2007.

MISUMI authorized factory

Authorized manufacturing partner for MISUMI China (2024).

Related pages

Continue exploring quality.

Traceability

Every shipment carries a lot code that traces back to the steel heat number.

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Honors & Awards

The partnerships, contracts, and recognitions that mark how Wolfer is regarded.

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Precision Standards

ISO 1328 · DIN 3962 · AGMA 2000 · JIS B 1702 — and how their classes map to each other.

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